Defensive publication



gel? DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at therequest of the applicant or owner in accordance with the Notice of Apr.11, 1968, 849 O.G. 1221. Identification is by serial number of theapplication and the heading indicates the number of pnges oi.specification, including claims and of sheets of drawing contained inthe application as originally filed. The tile of this application isavailable to the public for inspection; reproduction may be purchasedfor 30 cents per sheet.

Applications published under the Defensive Publication Program have notbeen examined as to the merits of alleged invention. The Patent Oflicemakes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED SEPTEMBER 2, 1969 809,368 CORROSION INHIBITING Joseph B.Arots, Wilmington, Del., and Joseph E. Mirolli,

Chester, Pa., assignors t0 Hercules Incorporated, Wilmington, Del., acorporation of Delaware Filed Mar. 21, 1969. Published Sept. 2, 1969Int. Cl. C08g 51/62, 43/00 US. Cl. 26037 No Drawing. 11 PagesSpecification The corrosive effects of carbon black filled cpihalohydrinpolymer vulcanizates can be inhibited by the addition of at least about5%, based on the weight of the polymer, of a lead compound, such as alead oxide, and from about 3% to about 20%, based on the weight of thepolymer of a sulfonate corrosion inhibiting agent such as bariumdinonylnaphthalene sulfonate. The sulfonate corrosion inhibiting agentwill have the general formula 1n OhM where R is an alkaryl radical, M isa metal selected from Groups I-A, Il-A, II-B, lV-A and VIII of thePeriodic Table, ammonia and amine radicals and x is an integer from 1 to3. The epihalohydrin polymers treated in this way are polyetherscontaining halornethyl groups attached to the main polymer chain.

